Downlink control information transmission method and receiving method, and related device

ABSTRACT

The application provides methods for transmitting and receiving Downlink Control Information (DCI), and a related device. The receiving method includes: determining configuration information of to-be-transmitted DCI, based on a corresponding relationship between a DCI Aggregation Level (AL), and/or, a number of blind detections corresponding to the AL, and a payload size of the DCI; configuring the to-be-transmitted DCI, by using the configuration information; and, transmitting the to-be-transmitted DCI to a mobile communication terminal.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. patent application Ser. No.16/622,688 which is a national stage application of PCT applicationnumber PCT/CN2018/090599 filed on Jun. 11, 2018, which claims priorityto Chinese Patent Application No. 201710444788.9, filed Jun. 13, 2017,both of which disclosures are incorporated herein by reference.

TECHNICAL FIELD

The application relates to communication technologies, and moreparticularly, to methods for transmitting and receiving Downlink ControlInformation (DCI), and related devices.

BACKGROUND

The Physical Downlink Control Channel (PDCCH) may be configured toindicate a Physical Downlink Shared Channel (PDSCH) schedulingcorresponding to a User Equipment (UE), or time-frequency resources andtransmission parameters, etc., which are scheduled by a Physical UplinkShared Channel (PUSCH) to be transmitted. However, in order to obtainsuch information, the UE needs to detect the PDCCH first.

Since the PDCCH is transmitted by a Base Station, before transmittingthe PDCCH by the base station, the UE has not received other informationexcept for some system information. Therefore, the UE does not learn thenumber, positions of Control Channel Elements (CCEs) occupied by thePDCCH, and DCI format transmitted by the PDCCH. Thus, detection of thePDCCH may only be implemented by blind detection.

In the related art, Payload Size of the DCI is not considered by DCI andblind detection related configuration. Taking a Long Term Evolution(LTE) as an example, payload sizes of different DCI are notdistinguished by the LTE. That is, DCI with different payload sizes isconfigured with the same number of blind detections.

SUMMARY

In a first aspect, an embodiment of the present disclosure provides amethod for transmitting downlink control information (DCI), applied to abase station, and the method includes:

determining configuration information of to-be-transmitted DCI, based ona corresponding relationship between a DCI Aggregation Level (AL),and/or, a number of blind detections corresponding to the AL, and apayload size of the DCI;

configuring the to-be-transmitted DCI based on the configurationinformation; and,

transmitting the to-be-transmitted DCI to a mobile communicationterminal.

In a second aspect, an embodiment of the present disclosure alsoprovides a method for receiving DCI, applied to a mobile communicationterminal, including:

determining one, or several possible payload sizes of to-be-receivedDCI;

determining configuration information corresponding to the possiblepayload size; and,

receiving the to-be-received DCI from a base station, based on theconfiguration information.

In a third aspect, an embodiment of the present disclosure also providesa base station, including:

a determining module, configured to determine configuration informationof to-be-transmitted DCI, based on a corresponding relationship betweena DCI AL, and/or, a number of blind detections corresponding to the AL,and a payload size of the DCI;

a configuring module, configured to configure the to-be-transmitted DCIbased on the configuration information; and,

a first transmitting module, configured to transmit theto-be-transmitted DCI to a mobile communication terminal.

In a fourth aspect, an embodiment of the present disclosure alsoprovides a mobile communication terminal, including:

a first determining module, configured to determine one, or severalpossible payload sizes of to-be-received DCI;

a second determining module, configured to determine configurationinformation corresponding to the possible payload size; and,

a first receiving module, configured to receive the to-be-received DCIfrom a base station, based on the configuration information.

In a fifth aspect, an embodiment of the present disclosure also providesa base station, including a memory, a processor, and a computer programstored in the memory, which is executable by the processor, wherein whenexecuting the program, the processor is caused to perform the abovemethod for transmitting DCI.

In a sixth aspect, an embodiment of the present disclosure also providesa mobile communication terminal, including a memory, a processor, and acomputer program stored in the memory, which is executable by theprocessor, wherein when executing the program, the processor is causedto perform the above method for receiving DCI.

In a seventh aspect, an embodiment of the present disclosure alsoprovides a computer readable storage medium, which stores a computerprogram, that when executed by a processor, causing the processor toperform the above method for transmitting DCI, or perform the abovemethod for receiving DCI.

BRIEF DESCRIPTION OF THE DRAWINGS

To describe the technical solutions in the embodiments of theapplication more clear, brief descriptions of attached figures needingto be used during illustration of embodiments in the application will beprovided in the following.

It is obvious that, attached figures in the following descriptions areonly some embodiments of the application. For persons having ordinaryskill in the art, other attached figures may also be obtained based onthese attached figures, without paying creative work.

FIG. 1 is a flowchart illustrating a method for transmitting DCI, inaccordance with an embodiment of the present disclosure;

FIG. 2 is a flowchart illustrating a method for receiving DCI, inaccordance with an embodiment of the present disclosure;

FIG. 3 is a schematic diagram illustrating structure of a base station,in accordance with an embodiment of the present disclosure;

FIG. 4 is a schematic diagram illustrating structure of a base station,in accordance with another embodiment of the present disclosure;

FIG. 5 is a schematic diagram illustrating structure of a mobilecommunication terminal, in accordance with an embodiment of the presentdisclosure;

FIG. 6 is a schematic diagram illustrating structure of a mobilecommunication terminal, in accordance with another embodiment of thepresent disclosure;

FIG. 7 is a schematic diagram illustrating structure of a base station,in accordance with still another embodiment of the present disclosure;and

FIG. 8 is a schematic diagram illustrating structure of a mobilecommunication terminal, in accordance with still another embodiment ofthe present disclosure.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present disclosurewill be clearly and completely described in the following, accompanyingwith attached figures in the embodiments of the present disclosure. Itis obvious that the described embodiments are some embodiments of thepresent disclosure, instead of all the embodiments. All the otherembodiments, which are obtained by persons having ordinary skill in theart without paying creative work and based on embodiments in the presentdisclosure, are covered by the protection scope of the presentdisclosure.

An embodiment of the application provides a method for transmittingdownlink control information (DCI). Such transmitting method is appliedto a base station.

In the method for transmitting DCI provided by an embodiment of thepresent disclosure, configuration information of to-be-transmitted DCIis determined, by using a corresponding relationship between anAggregation Level (AL) of DCI, and/or, the number of blind detectionscorresponding to the AL and payload size of DCI. Since the DCI AL,and/or, the number of blind detections corresponding to the AL arerelated with payload size, compared with the related art, in whichpayload size of DCI is not considered when configuring DCI, a new DCIconfiguration mode is provided, which improves flexibility forconfiguring DCI.

Referring to FIG. 1, FIG. 1 is a flowchart illustrating a method fortransmitting DCI, in accordance with an embodiment of the presentdisclosure. As shown in FIG. 1, the method includes the followingblocks.

In block 101, determining configuration information of to-be-transmittedDCI, by using a corresponding relationship between DCI AL, and/or, thenumber of blind detections corresponding to the AL and payload size ofDCI.

In the embodiment, the AL represents the number of CCEs occupied by aPDCCH. Specifically, a PDCCH blind detection may possess multiple ALs,e.g., the AL respectively corresponds to AL{1, 2, 4, 8}. The number ofblind detections corresponding to the AL is configured to indicate thenumber of PDCCH Candidates, which correspond to an AL in search space.

In a specific embodiment of the present disclosure, foregoing ALs 1, 2,4, 8 are described, by taking current LTE system as an example. However,it should be understood that, according to different requirements andthe evolution of the system, the number of ALs may be more, and the ALmay be greater, which is not repeated here.

Specifically, in the corresponding relationship of the embodiment, DCIAL, and/or, the number of blind detections corresponding to the AL arerelated with payload size of DCI. For example, DCI with differentpayload sizes may be configured to support different ALs. Alternatively,the same AL corresponding to DCI with different payload sizes may beconfigured with different quantities of blind detections, and so on.

In block 102, configuring the to-be-transmitted DCI by using theconfiguration information.

In block 103, transmitting the to-be-transmitted DCI to a mobilecommunication terminal.

Specifically, descriptions about the embodiment are provided in thefollowing, by using an example, in which foregoing correspondingrelationships are shown in Table 1 and Table 2.

TABLE 1 AL supported by DCI1 = 60bit AL = 1 AL = 2 AL = 4 AL = 8  ALsupported by DCI2 = 90bit AL = 2 AL = 4 AL = 8 AL = 16

TABLE 2 the total number of blind AL = 1 AL = 2 AL = 4 AL = 8 detectionsthe number of blind 6 6 2 2 16 detections, when DCI1 = 60bit the numberof blind 2 4 2 2 10 detections, when DCI2 = 90bit

With referent to Table 1, the DCI includes DCI1 with payload size 60bit, and DCI2 with payload size 90 bit. Specifically, DCI1 correspondsto AL1 (that is, AL=1), AL2 (that is, AL=2), AL4 (that is, AL=4) and AL8(that is, AL=8). However, DCI2 corresponds to AL2 (that is, AL=2), AL4(that is, AL=4), AL8 (that is, AL=8) and AL16 (that is, AL=16).

In an example, the quantities of Candidates corresponding to AL1, AL2,AL4, AL8 and AL16 are respectively 6, 6, 2, 2, 2. In foregoing Table 1,the total number of blind detections corresponding to DCI1 is 16, andthe total number of blind detections corresponding to DCI2 is 12.

With reference to Table 2, DCI includes DCI1 with payload size 60 bit,and DCI2 with payload size 90 bit. Specifically, the quantities of blinddetections corresponding to AL1, AL2, AL4 and AL8 of DCI1 arerespectively 6, 6, 2, and 2, and the total number of blind detections is16. The number of blind detections corresponding to AL1, AL2, AL4 andAL8 of DCI2 are respectively 2, 4, 2 and 2, and the total number ofblind detections is 10.

However, in the related art, DCI with different payload sizes supportsthe same AL. Besides, the same AL corresponds to the same number ofblind detections. For example, foregoing DCI1 and DCI2 both correspondto AL1, AL2, AL4 and AL8. The quantities of blind detectionscorresponding to AL1, AL2, AL4 and AL8 are respectively 6, 6, 2 and 2.

According to foregoing comparison, it can be seen that, in theembodiment, the number of blind detections needed by DCI with greaterpayload size may be reduced.

In the embodiment of the present disclosure, configuration informationof to-be-transmitted DCI is determined by using a correspondingrelationship between DCI AL, and/or, the number of blind detectionscorresponding to the AL, and payload size of DCI; the to-be-transmittedDCI is configured by using the configuration information; and theto-be-transmitted DCI is transmitted to a mobile communication terminal.In the embodiment, the DCI AL, and/or, the number of blind detectionscorresponding to the AL are related with payload size of DCI, this isdifferent from the related art, where payload size of DCI is notconsidered when configuring DCI. A new DCI configuration mode isprovided, which improves flexibility for configuring DCI.

In a specific embodiment of the present disclosure, the mobilecommunication terminal needs to perform the PDCCH blind detection, basedon the corresponding relationship between the DCI AL, and/or, the numberof blind detections corresponding to the AL, and payload size of DCI.Such corresponding relationship may be stored in the mobilecommunication terminal in advance, according to related provisions inthe standard, and may be directly read out when needing to be used.

To improve flexibility, in the specific embodiment of the presentdisclosure, the corresponding relationship may be issued by the basestation to the mobile communication terminal through high-levelsignaling at each use. Since foregoing corresponding relationship istransmitted in real time, the corresponding relationship issued eachtime may be changed according to difference of current situation, whichimproves the flexibility.

In this manner, in the embodiment of the present disclosure, the methodfor transmitting DCI further includes: transmitting the correspondingrelationship to the mobile communication terminal.

In the embodiment, the base station may transmit the correspondingrelationship, which is between DCI AL, and/or, the number of blinddetections corresponding to the AL and payload size of DCI, to themobile communication terminal, such that the mobile communicationterminal may obtain configuration information associated with AL ofto-be-transmitted DCI according to the corresponding relationship, andperform the blind detection, based on the configuration informationassociated with AL of to-be-transmitted DCI.

Optionally, the corresponding relationship is transmitted by using aControl Resource Set (CORESET).

In the embodiment, the CORESET represents a set of time-frequencyresources, which is composed of a group of Resource Element Groups(REGs). In the embodiment, the corresponding relationship may betransmitted to the mobile communication terminal through the CORESET, soas to improve diversity and flexibility about transmission ofcorresponding relationship.

Specifically, the CORESET is defined as follows.

The CORESET is defined as an REG under a group of given parametersNumerology. Control Search Space at least includes the followingattributes: AL; the number of Decode Candidates of each AL; a group ofCCEs for each Decode Candidate.

The following attributes may belong to the CORESET:transmission/diversity scheme; a mapping from CCE to REG; Pilotstructure; Bundling size of a Physical Resource Block (PRB).

The REG is defined as follows.

PDCCH Candidate is composed of a group of CCEs. The CCE is composed of agroup of REGs. Within one Orthogonal Frequency Division Multiplexing(OFDM) symbol, REG is one Resource Block (RB);

the communication system of New Radio (NR) at least supports thefollowing functions:

at least for an Enhance Mobile Broadband (eMBB), within an OFDM symbol,in addition to spatial multiplexing to different UEs (i.e., Multi-UserMultiple-Input Multiple-Output, MU-MIMO), multiple CCEs cannot betransmitted on the same PRB; for one UE, the channel estimate for oneResource Element (RE) should be reusable in multiple blind decodinginvolving the RE, in at least the same CORESET and Search Space type(common or UE-specific);

at least for slot-based downlink data transmission, DemodulationReference Signal (DMRS) position of downlink data is not dynamicallychanged relative to the start of the slot.

The time-frequency position configuration of CORESET may be informed, byusing one or more combinations in the following:

the time-frequency position information of CORESET may be informedthrough high-level signaling; or,

the time-frequency position information of CORESET may be informedthrough broadcast channel, system information; or,

the time-frequency position information of CORESET may be predefined,based on at least one of system bandwidth, sub-carrier space, antennaconfiguration, carrier frequency.

Specifically, in the embodiment, the CORESET may be pre-configured. Itis specified that, how many number of payload sizes of DCI in theCORESET need to be detected. It is also specified that, for DCI with acertain payload size, the AL needs to be detected, and the number ofblind detection corresponding to each AL. For example, in theembodiment, DCI length corresponding to each CORESET, the AL needing tobe detected by each DCI, and the number of blind detectionscorresponding to each AL may be pre-configured, and may be transmittedto the mobile communication terminal through high-level signaling.Subsequently, the mobile communication terminal may learn the probableDCI through blind detection, based on pre-configured mappingrelationship between CORESET and DCI length, the AL needing to bedetected by each DCI and the number of blind detections corresponding toeach AL.

Specifically, the mobile communication terminal receives the CORESETfrom the base station, determines probable payload size ofto-be-received DCI based on the CORESET, and determines configurationinformation corresponding to the probable payload size, so as to receivethe to-be-received DCI based on the configuration informationcorresponding to the probable payload size.

It should be noted that, the DCI length is associated with the CORESET.The DCI length may be changed per slot. The DCI length included by PDCCHdetected in the k-th CORESET per slot is associated with the CORESET, inwhich k is a positive integer.

Optionally, the CORESET is transmitted through high-level signaling.

In a specific embodiment of the present disclosure, the DCI AL, and/or,the number of blind detections corresponding to the AL are associatedwith payload size of DCI, which can be in various ways, for example:

accompanying with greater payload size, the AL becomes greater;

accompanying with greater payload size, the AL becomes smaller;

accompanying with greater payload size, the number of Candidatescorresponding to AL becomes smaller;

accompanying with greater payload size, the number of Candidatescorresponding to AL becomes greater;

accompanying with greater payload size, the AL becomes greater and thenumber of Candidates corresponding to AL becomes smaller;

accompanying with greater payload size, the AL becomes greater and thenumber of Candidates corresponding to AL becomes greater;

accompanying with greater payload size, the AL becomes smaller and thenumber of Candidates corresponding to AL becomes smaller;

accompanying with greater payload size, the AL becomes smaller and thenumber of Candidates corresponding to AL becomes greater.

Taking into account that for DCI with greater payload size, theprobability for using a larger AL is greater. Thus, in the specificembodiment of the present disclosure, the following manner is selected,i.e., the number of Candidates becomes smaller, accompanying withgreater payload size. That is, in the corresponding relationship, afirst number is less than a second number. The first number is a sum ofquantities of search space corresponding to all the ALs of a greater onebetween a first payload size and a second payload size. The secondnumber is a sum of quantities of search space corresponding to all theALs of a smaller one between the first payload size and the secondpayload size.

In the embodiment, all the ALs of DCI with different payload sizescorrespond to different quantities of search space. Specifically, forall the ALs of DCI with greater payload size, the number of search spacemay be set to be smaller. For example, if DCI includes DCI1 with payloadsize 60 bit, and DCI2 with payload size 90 bit, the number of searchspace corresponding to all the ALs of DCI2 may be set to be smaller thanthe number of search space corresponding to all the ALs of DCI1. If DCIincludes DCI1 with payload size 60 bit, DCI2 with payload size 90 bit,and DCI3 with payload size 120 bit, the number of search spacecorresponding to all the ALs of DCI2 may be set to be smaller than thenumber of search space corresponding to all the ALs of DCI1, and thenumber of search space corresponding to all the ALs of DCI3 may be setto be smaller than the number of search space corresponding to all theALs of DCI2.

It should be noted that, in the embodiment, the type of DCI payload sizeis not limited to the first payload size and the second payload size,that is, there may be DCI with three or more payload sizes.Specifically, the type of DCI payload size may be determined implicitly,based on other parameters, or may be determined explicitly, based onnetwork configuration or protocol convention.

In a specific embodiment of the present disclosure, when payload size isgreater, it is guaranteed that the number of Candidates is smaller,which may be implemented in various ways, descriptions are respectivelyprovided as follows.

In one method, within the corresponding relationship, the same ALcorresponds to the same number of Candidates. A first AL is greater thana second AL. The first AL is the maximum AL among all the ALs of thegreater one between the first payload size and the second payload size.The second AL is the maximum AL among all the ALs of the smaller onebetween the first payload size and the second payload size.

In the embodiment, the same AL corresponds to the same number ofCandidates. For example, the quantities of Candidates corresponding toAL1, AL2, AL4, AL8, AL16 are respectively 6, 6, 2, 2, 2.

In the embodiment, DCI with different payload sizes supports differentALs. Specifically, the maximum AL among all the ALs corresponding to DCIwith greater payload size may be set to be greater, so as to transmitDCI with AL as greater as possible, and reduce the number of blinddetections. For example, DCI includes DCI1 with payload size 60 bit, andDCI2 with payload size 90 bit. DCI1 is used more frequently than DCI2.Subsequently, the maximum AL among all the ALs corresponding to DCI2 maybe set to be greater than the maximum AL, which is among all the ALscorresponding to DCI1. If DCI includes DCI1 with payload size 60 bit,DCI2 with payload size 90 bit, and DCI3 with payload size 120 bit.Subsequently, the maximum AL among all the ALs corresponding to DCI2 maybe set to be greater than the maximum AL, which is among all the ALscorresponding to DCI1. The maximum AL among all the ALs corresponding toDCI3 may be set to be greater than the maximum AL, which is among allthe ALs corresponding to DCI2.

It should be noted that, in the embodiment, the type of DCI payload sizeis not limited to the first payload size and the second payload size.That is, there may be DCI with three or more payload sizes.Specifically, the type of DCI payload size may be determined implicitlybased on other parameters, and may be determined explicitly based onnetwork configuration or protocol convention.

An example is provided in the following to describe the embodiment, inwhich the quantities of Candidates corresponding to AL1, AL2, AL4, AL8and AL16 are respectively 6, 6, 2, 2, 2, DCI1 is used more frequentlythan DCI2, and foregoing corresponding relationships are respectivelyshown from Table 3 to Table 5.

TABLE 3 AL supported by DCI1 = 60bit AL = 1 AL = 2 AL = 4 AL = 8  ALsupported by DCI2 = 90bit AL = 1 AL = 4 AL = 8 AL = 16

TABLE 4 AL supported by DCI1 = 60bit AL = 1 AL = 2 AL = 4  AL = 8 ALsupported by DCI2 = 90bit AL = 4 AL = 8 AL = 16

TABLE 5 AL supported by DCI1 = 60bit AL = 1 AL = 2 AL = 4 AL = 8  ALsupported by DCI2 = 90bit AL = 2 AL = 4 AL = 8 AL = 16

With reference to Table 3, DCI includes DCI1 with payload size 60 bit,and DCI2 with payload size 90 bit. Specifically, DCI1 corresponds to AL1(that is, AL=1), AL2 (that is, AL=2), AL4 (that is, AL=4), AL8 (that is,AL=8). However, DCI2 corresponds to AL1 (that is, AL=1), AL4 (that is,AL=4), AL8 (that is, AL=8), AL16 (that is, AL=16). Thus, it can be seenthat, the maximum AL among all the ALs corresponding to DCI2 is greaterthan the maximum AL, which is among all the ALs corresponding to DCI1.The total number of Candidates corresponding to DCI1 is 16. The totalnumber of Candidates corresponding to DCI2 is 12. That is, the totalnumber of blind detections corresponding to DCI2 is less than the totalnumber of blind detections, which corresponds to DCI1.

With reference to Table 4, DCI includes DCI1 with payload size 60 bit,and DCI2 with payload size 90 bit. Specifically, DCI1 corresponds to AL1(that is, AL=1), AL2 (that is, AL=2), AL4 (that is, AL=4), AL8 (that is,AL=8), while DCI2 corresponds to AL4 (that is, AL=4), AL8 (that is,AL=8), AL16 (that is, AL=16). Thus, it can be seen that, the maximum ALamong all the ALs corresponding to DCI2 is greater than the maximum AL,which is among all the ALs corresponding to DCI1. The total number ofCandidates corresponding to DCI1 is 16. The total number of Candidatescorresponding to DCI2 is 6. That is, the total number of blinddetections corresponding to DCI2 is less than the total number of blinddetections, which corresponds to DCI1.

With reference to Table 5, DCI includes DCI1 with payload size 60 bit,and DCI2 with payload size 90 bit. Specifically, DCI1 corresponds to AL1(that is, AL=1), AL2 (that is, AL=2), AL4 (that is, AL=4), AL8 (that is,AL=8), while DCI2 corresponds to AL2 (that is, AL=2), AL4 (that is,AL=4), AL8 (that is, AL=8), AL16 (that is, AL=16). Subsequently, it canbe seen that, the maximum AL among all the ALs corresponding to DCI2 isgreater than the maximum AL, which is among all the ALs corresponding toDCI1. The total number of Candidates corresponding to DCI1 is 16. Thetotal number of Candidates corresponding to DCI2 is 12. That is, thetotal number of blind detections corresponding to DCI2 is less than thetotal number of blind detections, which corresponds to DCI1.

Thus, it can be seen that, in the embodiment, not only the ALcorresponding to the DCI with different payload sizes may be flexiblyconfigured, but also the number of blind detections of the DCI withgreater payload size may be reduced.

Optionally, in the corresponding relationship, a third AL is greaterthan a fourth AL. The third AL is the minimum AL among all the ALscorresponding to a greater one between the first payload size and thesecond payload size. The fourth AL is the minimum AL among all the ALscorresponding to a smaller one between the first payload size and thesecond payload size.

In the embodiment, since the DCI with a greater payload size has a lowerprobability of using a smaller AL, the minimum AL among all the ALscorresponding to DCI with greater payload size may be set to be greaterthan the minimum AL, which is among all the ALs corresponding to DCIwith smaller payload size, so as to avoid that the DCI with greaterpayload size uses smaller AL.

For example, with reference to foregoing Table 5, the minimum AL (thatis, AL=2) among all the ALs corresponding to DCI2 is greater than theminimum AL (that is, AL=1), which is among all the ALs corresponding toDCI1. The maximum AL (that is, AL=16) among all the ALs corresponding toDCI2 is greater than the maximum AL (that is, AL=8), which is among allthe ALs corresponding to DCI 1.

In the foregoing method, for different payload sizes of DCI, the same ALcorresponds to the same number (the number of searches) of Candidates.However, in another method of a specific embodiment of the presentdisclosure, for different payload sizes of DCI, the same AL may beconfigured with different quantities of Candidates, so as to reduce thenumber of searches.

This is specifically described as follows.

Optionally, in the corresponding relationship, corresponding to the sameAL, the number of Candidates corresponding to the greater one betweenthe first payload size and the second payload size is less than, orequal to the number of Candidates, which corresponds to the smaller onebetween the first payload size and the second payload size. And, thereis at least one AL. Corresponding to the at least one AL, the number ofCandidates corresponding to the greater one between the first payloadsize and the second payload size is less than the number of Candidates,which corresponds to the smaller one between the first payload size andthe second payload size.

In the embodiment, the number of Candidates corresponding to the same ALof DCI with different payload sizes is different. Specifically, sinceDCI with greater payload size has a lower probability for using asmaller AL, the number of Candidates corresponding to a smaller AL maybe set to be smaller. For example, with reference to Table 6, the numberof blind detections corresponding to AL1 and AL2 of DCI2 is respectively0 and 2. Subsequently, the total number of blind detections of DCI2 isless than the total number of blind detections of DCI1. Compared withthe related art, the total number of blind detections of DCI2 isreduced. More particularly, the number of blind detections of a smallerAL is reduced, so as to reduce power consumption of mobile communicationterminals.

TABLE 6 total number of blind AL = 1 AL = 2 AL = 4 AL = 8 detections thenumber of blind 6 6 2 2 16 detections when DCI1 = 60bit the number ofblind 0 2 2 2  6 detections when DC12 = 90bit

It should be noted that, in the embodiment, the type of DCI payload sizeis not limited to the first payload size and the second payload size.That is, there may be DCI with three or more payload sizes.

An embodiment of the present disclosure also provides a method forreceiving DCI, which is applied to a mobile communication terminal. FIG.2 is a flowchart illustrating a method for receiving DCI, in accordancewith an embodiment of the present disclosure. As shown in FIG. 2, themethod for receiving DCI includes the following blocks.

In block 201, determining one or several possible payload sizes ofto-be-received DCI.

In the embodiment, the to-be-received DCI may include a possible payloadsize, e.g., DCI1 with payload size 60 bit, or DCI2 with payload size 90bit. The to-be-received DCI may also include multiple possible payloadsizes. For example, the to-be-received DCI may include DCI1 with payloadsize 60 bit, and DCI2 with payload size 90 bit.

In block 202, determining configuration information corresponding to thepossible payload size.

In the embodiment, a base station may configure correspondingconfiguration information for DCI with different payload sizes, andtransmit to a mobile communication terminal. The mobile communicationterminal may perform a blind detection in search space, based on theconfiguration information, so as to obtain the to-be-received DCI.

In block 203, receiving the to-be-received DCI from the base stationbased on the configuration information.

In the method for receiving DCI provided by an embodiment of the presentdisclosure, after determining one or several possible payload sizes ofto-be-received DCI, configuration information corresponding to thepossible payload size is determined; and the to-be-received DCI from abase station is received based on the configuration information. In theembodiment, DCI with different payload sizes is configured withcorresponding configuration information, and the to-be-received DCI isreceived based on the configuration information. Compared with therelated art, in which payload size of DCI is not considered whenreceiving DCI, a new method for receiving DCI is provided.

Optionally, the method for receiving DCI further includes: receiving aCORESET corresponding to payload size of the to-be-received DCI from thebase station, in which the CORESET records the configuration informationassociated with AL of the to-be-received DCI.

Correspondingly, the block for determining possible payload size of theto-be-received DCI includes: determining the possible payload size,based on the CORESET.

Correspondingly, the block for determining the configuration informationcorresponding to the possible payload size, includes: determining theconfiguration information by analyzing the CORESET.

In the embodiment, the configuration information associated with AL ofthe to-be-received DCI may include, the AL to be detected by the DCI,the number of blind detections corresponding to each AL, and so on.

Specifically, in the embodiment, the CORESET may be pre-configured. Itis specified that how many number of payload sizes of DCI in the CORESETneed to be detected, and further specified that the AL needing to bedetected by DCI with each kind of payload size, and the number of blinddetections corresponding to each AL.

For example, the base station may pre-configure DCI length (that is,payload size) corresponding to each CORESET, the AL needing to bedetected by each DCI, the number of blind detections corresponding toeach AL, and may transmit to the mobile communication terminal throughhigh-level signaling. Subsequently, the mobile communication terminalmay learn the possible DCI through blind detection, based on a mappingrelationship between pre-configured CORESET and DCI length, the ALneeding to be detected by each DCI, and the number of blind detectionscorresponding to each AL.

In the embodiment, the mobile communication terminal may quicklydetermine the possible payload size and configuration information of theto-be-received DCI through the CORESET, and perform the blind detectionbased on the configuration information, so as to obtain theto-be-received DCI.

Optionally, the CORESET is transmitted through high-level signaling.

Optionally, determining the configuration information corresponding tothe possible payload size includes: determining the configurationinformation corresponding to the possible payload size, based on acorresponding relationship between DCI AL, and/or, the number of blinddetections corresponding to the AL, and payload size of DCI.

In the embodiment, the configuration information associated with AL ofthe DCI is related with payload size of DCI. For example, DCI withdifferent payload sizes may be configured to support a different AL. Or,the same AL corresponding to DCI with different payload sizes may beconfigured with a different number of blind detections, and so on.

For example, with reference to foregoing Table 1, DCI1 corresponds toAL1, AL2, AL4 and AL8, while DCI2 corresponds to AL2, AL4, AL8 and AL16.With reference to foregoing Table 2, the quantities of blind detectionscorresponding to AL1, AL2, AL4 and AL8 of DCI1 are respectively 6, 6, 2and 2, and the total number of blind detections is 16. The quantities ofblind detections corresponding to AL1, AL2, AL4 and AL8 of DCI2 arerespectively 2, 4, 2, 2, and the total number of blind detections is 10.

However, in the related art, DCI with different payload sizes supportsthe same AL, and the same AL corresponds to the same number of blinddetections. For example, for foregoing DCI1 and DCI2, DCI1 and DCI2 bothcorrespond to AL1, AL2, AL4 and AL8. Besides, the quantities of blinddetections corresponding to AL1, AL2, AL4 and AL8 are respectively 6, 6,2, 2 in sequence.

Based on foregoing comparison, it can be seen that, in the embodiment,the number of blind detections needed by DCI with greater payload sizemay be reduced.

Optionally, in the corresponding relationship, the first number is lessthan the second number. The first number is a sum of quantities ofsearch space corresponding to all the ALs of a greater one between thefirst payload size and the second payload size. The second number is asum of quantities of search space corresponding to all the ALs of asmaller one between the first payload size and the second payload size.

In the embodiment, the number of search space corresponding to all theALs of DCI with different payload sizes is different. Specifically, thenumber of search space corresponding to all the ALs of DCI with greaterpayload size may be set to be smaller. For example, if DCI includes DCI1with payload size 60 bit, and DCI2 with payload size 90 bit, the numberof search space corresponding to all the ALs of DCI2 may be set to beless than the number of search space, which corresponds to all the ALsof DCI1. If DCI includes DCI1 with payload size 60 bit, DCI2 withpayload size 90 bit, and DCI3 with payload size 120 bit, the number ofsearch space corresponding to all the ALs of DCI2 may be set to be lessthan the number of search space, which corresponds to all the ALs ofDCI1. The number of search space corresponding to all the ALs of DCI3may be set to be less than the number of search space, which correspondsto all the ALs of DCI2.

It should be noted that, in the embodiment, the type of DCI payload sizeis not limited to the first payload size and the second payload size.That is, there may be DCI with three or more payload sizes.Specifically, the type of DCI payload size may be determined implicitlybased on other parameters, or may be determined explicitly based onnetwork configuration or protocol convention.

Optionally, in the corresponding relationship, the same AL correspondsto the same number of search space. The first AL is greater than thesecond AL. The first AL is the maximum AL among all the ALscorresponding to a greater one between the first payload size and thesecond payload size. The second AL is the maximum AL among all the ALscorresponding to a smaller one between the first payload size and thesecond payload size.

In the embodiment, the same AL corresponds to the same number ofCandidates. For example, the number of Candidates corresponding to AL1,AL2, AL4, AL8 and AL16 is respectively 6, 6, 2, 2 and 2.

In the embodiment, the DCI with different payload sizes supportsdifferent ALs. Specifically, the maximum AL among all the ALs of DCIwith a greater payload size may be set to be greater, so as to transmitDCI with AL as greater as possible, and reduce the number of blinddetections. For example, the DCI includes DCI1 with payload size 60 bit,and DCI2 with payload size 90 bit. Subsequently, the maximum AL amongall the ALs of DCI2 may be set to be greater than the maximum AL, whichis among all the ALs of DCI1. If DCI includes DCI1 with payload size 60bit, DCI2 with payload size 90 bit and DCI3 with payload size 120 bit,the maximum AL among all the ALs of DCI2 may be set to be greater thanthe maximum AL, which is among all the ALs of DCI1. The maximum AL amongall the ALs of DCI3 may be set to be greater than the maximum AL, whichis among all the ALs of DCI2.

For example, with reference to foregoing Table 3 and Table 5, in theembodiment, not only the AL corresponding to DCI with different payloadsizes may be configured flexibly, but also the number of blinddetections of DCI with a greater payload size may be reduced.

It should be noted that, in the embodiment, the type of DCI payload sizeis not limited to the first payload size and the second payload size.That is, there may be DCI with three or more payload sizes.Specifically, the type of DCI payload size may be determined implicitlybased on other parameters, and may be determined explicitly based onnetwork configuration or protocol convention.

Optionally, in the corresponding relationship, the third AL is greaterthan the fourth AL. The third AL is the minimum AL of all the ALscorresponding to the greater one between the first payload size and thesecond payload size. The fourth AL is the minimum AL of all the ALscorresponding to the smaller one between the first payload size and thesecond payload size.

In the embodiment, since the DCI with a greater payload size has a lowerprobability of using a lower AL, the minimum AL among all the ALscorresponding to the DCI with greater payload size may be set to begreater than the minimum AL, which is among all the ALs corresponding tothe DCI with smaller payload size, so as to avoid the DCI with greaterpayload size using a lower AL.

For example, with reference to foregoing Table 5, the minimum AL (thatis, AL=2) among all the ALs of DCI2 is greater than the minimum AL (thatis, AL=1), which is among all the ALs of DCI1. The maximum AL (that is,AL=16) among all the ALs of DCI2 is greater than the maximum AL (thatis, AL=8), which is among all the ALs of DCI1.

Optionally, in the corresponding relationship, corresponding to the sameAL, the number of Candidates corresponding to the greater one betweenthe first payload size and the second payload size is less than, orequal to the number of Candidates corresponding to the smaller onebetween the first payload size and the second payload size. And, thereis at least one AL. Corresponding to the at least one AL, the number ofCandidates corresponding to the greater one between the first payloadsize and the second payload size is less than the number of Candidates,which corresponds to the smaller one between the first payload size andthe second payload size

In the embodiment, the number of Candidates corresponding to the same ALof DCI with different payload sizes is different. Specifically, sinceDCI with greater payload size has a lower probability for using thelower AL, the number of Candidates corresponding to lower AL may be setto be smaller. For example, with reference to Table 6, the number ofblind detections respectively corresponding to AL1 and AL2 of DCI2 is 0and 2, such that the total number of blind detections of DCI2 is lessthan that of DCI1. Compared with the related art, the total number ofblind detections of DCI2 is reduced. More particularly, the number ofblind detections of lower AL is reduced, so as to reduce powerconsumption of a mobile communication terminal.

An embodiment of the present disclosure further provides a base station.FIG. 3 is a schematic diagram illustrating a base station, in accordancewith an embodiment of the present disclosure. As shown in FIG. 3, a basestation 300 includes a determining module 301, a configuring module 302,and a first transmitting module 303.

The determining module 301 is configured to determine configurationinformation of to-be-transmitted downlink control information (DCI), byusing a corresponding relationship between DCI AL, and/or, a number ofblind detections corresponding to AL, and payload size of DCI.

The configuring module 302 is configured to configure theto-be-transmitted DCI, by using the configuration information.

The first transmitting module 303 is configured to transmit theto-be-transmitted DCI to a mobile communication terminal.

Optionally, with reference to FIG. 4, the base station 300 furtherincludes a second transmitting module 304, which is configured totransmit the corresponding relationship to the mobile communicationterminal.

Optionally, the corresponding relationship is transmitted through aControl Resource Set (CORESET).

Optionally, the corresponding relationship is transmitted throughhigh-level signaling.

Optionally, in the corresponding relationship, a first number is lessthan a second number. The first number is a sum of the number of searchspace corresponding to all the ALs of a greater one between the firstpayload size and the second payload size. The second number is a sum ofthe number of search space corresponding to all the ALs of a smaller onebetween the first payload size and the second payload size.

Optionally, in the corresponding relationship, the same AL correspondsto the same number of Candidates. A first AL is greater than a secondAL. The first AL is the maximum AL among all the ALs of the greater onebetween the first payload size and the second payload size. The secondAL is the maximum AL among all the ALs corresponding to the smaller onebetween the first payload size and the second payload size.

Optionally, in the corresponding relationship, a third AL is greaterthan a fourth AL. The third AL is the minimum AL among all the ALs ofthe greater one between the first payload size and the second payloadsize. The fourth AL is the minimum AL among all the ALs of the smallerone between the first payload size and the second payload size.

Optionally, in the corresponding relationship, corresponding to the sameAL, the number of Candidates corresponding to the greater one betweenthe first payload size and the second payload size is less than, orequal to the number of Candidates corresponding to the smaller onebetween the first payload size and the second payload size. And, thereis at least one AL. Corresponding to the at least one AL, the number ofCandidates corresponding to the greater one between the first payloadsize and the second payload size is less than the number of Candidates,which corresponds to the smaller one between the first payload size andthe second payload size.

In the base station 300 provided by the embodiment of the presentdisclosure, the determining module 301 determines the configurationinformation of the to-be-transmitted DCI, by using the correspondingrelationship, which is between DCI AL, and/or, the number of blinddetections corresponding to the AL, and payload size of the DCI; theconfiguring module 302 configures the to-be-transmitted DCI, by usingthe configuration information; and, the first transmitting module 303transmits the to-be-transmitted DCI to the mobile communicationterminal. In the embodiment, the payload size of DCI is related with theDCI AL, and/or, the number of blind detections corresponding to the AL,this is different from the related art, where payload size of DCI is notconsidered, when configuring DCI. A new DCI configuration mode isprovided, which improves the flexibility for configuring DCI.

An embodiment of the present disclosure further provides a mobilecommunication terminal. FIG. 5 is a schematic diagram illustrating amobile communication terminal, in accordance with an embodiment of thepresent disclosure. As shown in FIG. 5, a mobile communication terminal500 includes a first determining module 501, a second determining module502 and a first receiving module 503.

The first determining module 501 is configured to determine one, orseveral possible payload sizes of to-be-received Downlink ControlInformation (DCI).

The second determining module 502 is configured to determineconfiguration information corresponding to possible payload size.

The first receiving module 503 is configured to receive theto-be-received DCI from a base station, based on the configurationinformation.

Optionally, with reference to FIG. 6, the mobile communication terminal500 further includes a second receiving module 504, configured toreceive a Control Resource Set (CORESET) corresponding to the payloadsize of the to-be-received DCI from the base station, in which theCORESET records the configuration information associated with anAggregation Level (AL) of the to-be-received DCI.

Correspondingly, the first determining module 501 is configured todetermine possible payload size, based on the CORESET.

Correspondingly, the second determining module 502 is configured todetermine the configuration information, by analyzing the CORESET.

Optionally, the CORESET is transmitted through high-level signaling.

Optionally, the second determining module 502 is configured to determinethe configuration information corresponding to possible payload size,based on the corresponding relationship between DCI AL, and/or, thenumber of blind detections corresponding to the AL, and payload size ofDCI.

Optionally, in the corresponding relationship, a first number is lessthan a second number. The first number is a sum of the number ofCandidates corresponding to all the ALs of a greater one between a firstpayload size and a second payload size. The second number is a sum ofthe number of Candidates corresponding to all the ALs of a smaller onebetween the first payload size and the second payload size.

Optionally, in the corresponding relationship, the same AL correspondsto the same number of Candidates. A first AL is greater than a secondAL. The first AL is the maximum AL among all the ALs corresponding tothe greater one between the first payload size and the second payloadsize. The second AL is the maximum AL among all the ALs corresponding tothe smaller one between the first payload size and the second payloadsize.

Optionally, in the corresponding relationship, a third AL is greaterthan a fourth AL. The third AL is the minimum AL among all the ALs ofthe greater one between the first payload size and the second payloadsize. The fourth AL is the minimum AL among all the ALs of the smallerone between the first payload size and the second payload size.

Optionally, in the corresponding relationship, corresponding to the sameAL, the number of Candidates corresponding to the greater one betweenthe first payload size and the second payload size is less than, orequal to the number of Candidates, which corresponds to the smaller onebetween the first payload size and the second payload size. And, thereis at least one AL. Corresponding to the at least one AL, the number ofCandidates corresponding to the greater one between the first payloadsize and the second payload size is less than the number of Candidates,which corresponds to the smaller one between the first payload size andthe second payload size.

In the mobile communication terminal 500 provided by the embodiment ofthe present disclosure, the first determining module 501 determines one,or several possible payload sizes of the to-be-received DCI; the seconddetermining module 502 determines the configuration informationcorresponding to the possible payload size; the first receiving module503 receives the to-be-received DCI from the base station, based on theconfiguration information. In the embodiment, DCI with different payloadsizes is configured with corresponding configuration information, andthe to-be-received DCI is received based on the configurationinformation. Compared with the related art, in which payload size of DCIis not considered, when receiving the DCI, a new DCI receiving mode isprovided.

An embodiment of the present disclosure also provides a base station.FIG. 7 is a schematic diagram illustrating a base station, in accordancewith an embodiment of the present disclosure. As shown in FIG. 7, a basestation 700 includes a processor 701, a transceiver 702, a memory 703and a bus interface.

The processor 701 is configured to read a program from the memory 703,and perform the following process:

determining configuration information of to-be-transmitted DownlinkControl Information (DCI), by using a corresponding relationship betweenDCI Aggregation Level (AL), and/or, a number of blind detectionscorresponding to the AL, and a payload size of the DCI;

configuring the to-be-transmitted DCI, based on the configurationinformation; and,

transmitting the to-be-transmitted DCI to a mobile communicationterminal.

In FIG. 7, the bus architecture may include any number of interconnectedbuses and bridges. Specifically, one or more processors represented bythe processor 701 and various circuits of memory represented by thememory 703 are linked together. The bus architecture can also linkvarious other circuits, such as peripherals, voltage regulators, andpower management circuits, as is known in the art. Therefore, it willnot be further described. The bus interface provides an interface. Thetransceiver 702 may be multiple components, including a transmitter anda receiver, providing units for communicating with various other deviceson a transmission medium.

The processor 701 is in charge of managing bus architecture and generalprocessing. The memory 703 may store data used by the processor 701 whenperforming operations.

Optionally, the processor 701 is further configured to transmit thecorresponding relationship to the mobile communication terminal.

Optionally, the corresponding relationship is transmitted through theCORESET.

Optionally, the CORESET is transmitted through high-level signaling.

Optionally, in the corresponding relationship, a first number is lessthan a second number. The first number is a sum of number of Candidatescorresponding to all the ALs of a greater one between a first payloadsize and a second payload size. The second number is a sum of number ofCandidates corresponding to all the ALs of a smaller one between thefirst payload size and the second payload size.

Optionally, in the corresponding relationship, the same AL correspondsto the same number of Candidates. A first AL is greater than a secondAL. The first AL is the maximum AL among all the ALs of the greater onebetween the first payload size and the second payload size. The secondAL is the maximum AL among all the ALs of the smaller one between thefirst payload size and the second payload size.

Optionally, in the corresponding relationship, a third AL is greaterthan a fourth AL. The third AL is the minimum AL among all the ALs ofthe greater one between the first payload size and the second payloadsize. The fourth AL is the minimum AL among all the ALs of the smallerone between the first payload size and the second payload size.

Optionally, in the corresponding relationship, corresponding to the sameAL, the number of Candidates corresponding to the greater one betweenthe first payload size and the second payload size is less than, orequal to the number of Candidates, which corresponds to the smaller onebetween the first payload size and the second payload size. And, thereis at least one AL. Corresponding to the at least one AL, the number ofCandidates corresponding to the greater one between the first payloadsize and the second payload size is less than the number of Candidates,which corresponds to the smaller one between the first payload size andthe second payload size.

In the base station 700 provided by the embodiment of the presentdisclosure, the configuration information of to-be-transmitted DCI isdetermined, by using the corresponding relationship between DCI AL,and/or, the number of blind detections corresponding to the AL, andpayload size of DCI; the to-be-transmitted DCI is configured, based onthe configuration information; and, the to-be-transmitted DCI istransmitted to the mobile communication terminal. In the embodiment, theDCI AL, and/or, the number of blind detections corresponding to the ALare related with the payload size of DCI, this is different from therelated art, in which payload size of DCI is not considered whenconfiguring the DCI. A new DCI configuration method is provided, whichimproves the flexibility for configuring the DCI.

An embodiment of the present disclosure also provides a mobilecommunication terminal. FIG. 8 is a schematic diagram illustrating amobile communication terminal, which is provided by an embodiment of thepresent disclosure. As shown in FIG. 8, a mobile communication terminal800 includes: at least one processor 801, a memory 802, at least onenetwork interface 804 and a user interface 803. Each component in themobile communication terminal 800 is coupled through a bus system 805.It should be understood that, the bus system 805 is configured toimplement connection communication among these components. In additionto data bus, the bus system 805 further includes power bus, control busand status signal bus. However, for clarity of description, variousbuses are labeled as bus system 805 in FIG. 8.

The user interface 803 may include a display, a keyboard, or a clickingdevice (e.g., a mouse, a trackball, a touchpad, or a touch screen,etc.).

It should be understood that, in the embodiment of the presentdisclosure, the memory 802 may be a transitory memory, or anon-transitory memory, or may include both of the transitory memory andthe non-transitory memory. The non-transitory memory may be a Read-OnlyMemory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), anElectrically EPROM (EEPROM), or a flash memory. The transitory memorymay be a Random Access Memory (RAM), which is used as an external cache.Many forms of RAM are available by way of illustration and notlimitation, e.g., a Static RAM (SRAM), a Dynamic RAM (DRAM), aSynchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDRSDRAM), anEnhanced SDRAM (ESDRAM), a Synchlink DRAM (SLDRAM) and a Direct RambusRAM (DRRAM). The memory 802 of the systems and methods described in theapplication is intended to include, without being limited to, these andany other suitable types of memory.

In some implementations, the memory 802 stores the following elements,executable modules, or data structures, or a subset thereof, or anextended set thereof: an Operating System (OS) 8021 and an application8022.

The OS 8021 includes various system programs, e.g., a frame layer, acore library layer, a driver layer, etc., are used to implement variousbasic services and to handle hardware-based tasks. The application 8022includes various applications, such as a media player (Media Player), abrowser, and so on, for implementing various application services. Aprogram implementing the method of the embodiments in the presentdisclosure may be included in the application 8022.

In the embodiment of the present disclosure, by calling a program or aninstruction stored in the memory 802, specifically, a program or aninstruction stored by the application 8022, the processor 801 isconfigured to: determine one, or several possible payload size ofto-be-received DCI; determine configuration information corresponding topossible payload size; and, receive the to-be-received DCI from a basestation, based on the configuration information.

The method provided by foregoing embodiments of the application may beapplied to the processor 801, or may be implemented by the processor801. The processor 801 may be an integrated circuit chip with signalprocessing capability. During the implementation process, each block ofthe foregoing method may be completed by an integrated logic circuit ofhardware in the processor 801, or by an instruction in a form ofsoftware. The foregoing processor 801 may be a general processor, aDigital Signal Processor (DSP), an Application Specific IntegratedCircuit (ASIC), a Field Programmable Gate Array (FPGA), or otherprogrammable logic devices, discrete gate or transistor logic device,discrete hardware components. Each method, block, and logic diagramprovided by the embodiment of the present disclosure may be implemented,or executed. The general processor may be a microprocessor, or anyconventional processor, and so on. The blocks of the method provided bythe embodiments of the present disclosure may be directly completed bythe hardware decoding processor, or may be completed by a combination ofhardware and software modules in the decoding processor. The softwaremodules may be located in mature storage medium in the field, such as,the RAM, the flash memory, the ROM, the PROM, Electrically erasableprogrammable memory, and a register. The storage medium is located inthe memory 802. The processor 801 reads information from the memory 802,and completes blocks of foregoing method in combination with thehardware.

It should be understood that, these embodiments described in theapplication may be implemented by hardware, software, firmware,middleware, microcode, or a combination thereof. For hardwareimplementation, in the one or more ASICs, DSPs, DSP Device (DSPDs),Programmable Logic Devices (PLDs), FPGAs, general processors,controllers, microcontrollers, microprocessors, a processing unit may beimplemented in another electronic unit or a combination thereof, whichis configured to implement the functions of the application.

For software implementation, techniques described in the application maybe implemented, by executing modules (e.g., process, function, etc.)with corresponding functions in the application. Software codes may bestored in the memory, and executed by the processor. The memory may beimplemented in the processor, or external to the processor.

Optionally, the processor 801 is further configured to: receive aCORESET corresponding to payload size of to-be-received DCI from thebase station, in which the CORESET records configuration informationassociated with an AL of the to-be-received DCI. The processor 801 isfurther configured to determine possible payload size, based on theCORESET. The processor 801 is further configured to determine theconfiguration information, by analyzing the CORESET.

Optionally, the CORESET is transmitted through high-level signaling.

Optionally, the processor 801 is further configured to determine theconfiguration information corresponding to possible payload size, basedon the corresponding relationship between DCI AL, and/or, the number ofblind detections corresponding to the AL, and payload size of the DCI.

Optionally, in the corresponding relationship, a first number is lessthan a second number. The first number is a sum of the number of searchspace corresponding to all the ALs of a greater one between a firstpayload size and a second payload size. The second number is a sum ofthe number of search space corresponding to all the ALs of a smaller onebetween the first payload size and the second payload size.

Optionally, in the corresponding relationship, the same AL correspondsto the same number of Candidates. A first AL is greater than a secondAL. The first AL is the maximum AL among all the ALs of the greater onebetween the first payload size and the second payload size. The secondAL is the maximum AL among all the ALs of the smaller one between thefirst payload size and the second payload size.

Optionally, in the corresponding relationship, a third AL is greaterthan a fourth AL. The third AL is the minimum AL among all the ALscorresponding to the greater one between the first payload size and thesecond payload size. The fourth AL is the minimum AL among all the ALscorresponding to the smaller one between the first payload size and thesecond payload size.

Optionally, in the corresponding relationship, corresponding to the sameAL, the number of Candidates corresponding to the greater one betweenthe first payload size and the second payload size is less than, orequal to the number of Candidates, which corresponds to the smaller onebetween the first payload size and the second payload size. And, thereis at least one AL. Corresponding to the at least one AL, the number ofCandidates corresponding to the greater one between the first payloadsize and the second payload size is less than the number of Candidates,which corresponds to the smaller one between the first payload size andthe second payload size.

In the embodiment of the present disclosure, the mobile communicationterminal 800 determines the configuration information corresponding topossible payload size, by determining one, or several possible payloadsizes of to-be-received DCI, and receives the to-be-received DCI fromthe base station, based on the configuration information. In theembodiment, DCI with different payload sizes is configured withcorresponding configuration information, and the to-be-received DCI isreceived based on the configuration information. Compared with therelated art, in which payload size of DCI is not considered whenreceiving DCI, a new method for receiving DCI is provided.

An embodiment of the present disclosure also provides a computerreadable storage medium, which stores computer programs, that whenexecuted by the processor, causing the processor to implement a methodfor transmitting DCI according to any foregoing method embodiment.

An embodiment of the present disclosure also provides a computerreadable storage medium, which stores computer programs, that whenexecuted by the processor, causing the processor to implement a methodfor receiving DCI according to any foregoing method embodiment.

Persons having ordinary skill in the art may learn that, units andalgorithm blocks of each example described by embodiments of theapplication may be implemented in electronic hardware, or in acombination of computer software and electronic hardware. Whether thesefunctions are performed by hardware or software depends on specificapplication and design constraints of technical solutions. For eachspecific application, a person skilled in the art may adopt a differentmethod to implement the described functions. However, suchimplementation should not be considered to go beyond the scope of theapplication.

Persons having ordinary skill in the art may clearly learn that, forconvenience and conciseness of description, the specific working processof above-described system, device and unit may refer to correspondingprocess of foregoing method embodiments, which is not repeated here.

In the embodiments of the application, it should be understood that, thedisclosed devices and methods may be implemented with other methods. Forexample, the above-described device embodiments are only illustrative,e.g., the division of the unit is only a logic function division. Inpractical implementation, there may be another division method. Forexample, multiple units or components may be combined, or integratedinto another system, or some features may be omitted, or not executed.From another point, the mutual coupling or direct coupling, orcommunication connection shown or discussed may be indirect coupling, orcommunication connections through some interfaces, devices, or units,which may be electronic, mechanical, or in other form.

Units described as separate components may be, or may be not physicallyseparate. A component displayed as a unit may be, or may be not aphysical unit, that is, it may be located in one place, or may bedistributed to multiple network units. According to practicalrequirements, some units or all the units may be selected to implementthe objective of solutions in the embodiments of the application.

In addition, in each embodiment of the present disclosure, variousfunctional units may be integrated into a processing unit.Alternatively, each unit physically exists alone. Still alternatively,two or more units may be integrated into one unit.

When the functions are implemented in the form of software functionalunit, which is sold or used as an independent product, such softwarefunctional unit may be stored in a computer readable storage medium.Based on such understandings, the technical solution of the presentdisclosure, or, a part contributing to the related art, or a part of thetechnical solution may be embodied in the form of a software product.The computer software produce is stored in one storage medium, includingseveral instructions to enable a computer device (may be a PersonalComputer (PC), a server, or a network device, etc.) to implement all theblocks, or some blocks in the method of each embodiment of the presentdisclosure. Foregoing storage medium includes various media that canstore program codes, such as a U disk, a mobile hard disk, an ROM, anRAM, a disk, or a Compact Disk (CD), and so on.

Foregoing is only specific implementations of the application. However,protection scope of the application is not limited. Any changes orsubstitutions that are obvious to those skilled in the art within thescope of the application are covered by the scope of the application.Therefore, the protection scope of the disclosure should be determinedby the scope of the claims.

What is claimed is:
 1. A base station, comprising a memory, a processor,and a computer program stored in the memory, which is executable by theprocessor, wherein when executing the program, the processor is causedto perform: determining an Aggregation Level (AL) of to-be-transmittedDCI, based on a corresponding relationship between a DCI AL and a DCIpayload size, and/or, determining the number of blind detections of theto-be-transmitted DCI based on a corresponding relationship between thenumber of blind detections corresponding to the DCI AL and the DCIpayload size; configuring the to-be-transmitted DCI based on the ALand/or the number of blind detections of the to-be-transmitted DCI; and,transmitting the to-be-transmitted DCI to a mobile communicationterminal; wherein the method further comprises: transmitting a ControlResource Set (CORESET) to the mobile communication terminal; wherein theCORESET is used to determine possible payload size of theto-be-transmitted DCI, and determine an AL and/or the number of blinddetections corresponding to the possible payload size.
 2. The basestation according to claim 1, wherein the CORESET is transmitted throughhigh-level signaling.
 3. The base station according to claim 1, whereinin the corresponding relationship, a first number is less than a secondnumber; the first number is a sum of number of search spacecorresponding to all the ALs of a greater one between a first payloadsize and a second payload size; and the second number is a sum of numberof search space corresponding to all the ALs of a smaller one betweenthe first payload size and the second payload size.
 4. The base stationaccording to claim 3, wherein in the corresponding relationship, thesame AL corresponds to the same number of Candidates, a first AL isgreater than a second AL; the first AL is the maximum AL among all theALs corresponding to the greater one between the first payload size andthe second payload size; and the second AL is the maximum AL among allthe ALs corresponding to the smaller one between the first payload sizeand the second payload size.
 5. The base station according to claim 4,wherein in the corresponding relationship, a third AL is greater than afourth AL; the third AL is the minimum AL among all the ALscorresponding to the greater one between the first payload size and thesecond payload size, and the fourth AL is the minimum AL among all theALs corresponding to the smaller one between the first payload size andthe second payload size.
 6. The base station to claim 3, wherein in thecorresponding relationship, corresponding to the same AL, the number ofCandidates corresponding to the greater one between the first payloadsize and the second payload size is less than, or equal to the number ofCandidates, which corresponds to the smaller one between the firstpayload size and the second payload size; and there is at least one AL,corresponding to the at least one AL, the number of Candidatescorresponding to the greater one between the first payload size and thesecond payload size is less than the number of Candidates, whichcorresponds to the smaller one between the first payload size and thesecond payload size.
 7. The base station to claim 1, wherein thecorresponding relationship is transmitted to the mobile communicationterminal through the CORESET.
 8. A computer readable storage medium,comprising: a computer program stored thereon, wherein the computerprogram is executed by the processor to cause the processor to perform:determining an Aggregation Level (AL) of to-be-transmitted DCI, based ona corresponding relationship between a DCI AL and a DCI payload size,and/or, determining the number of blind detections of theto-be-transmitted DCI based on a corresponding relationship between thenumber of blind detections corresponding to the DCI AL and the DCIpayload size; configuring the to-be-transmitted DCI based on the ALand/or the number of blind detections of the to-be-transmitted DCI; and,transmitting the to-be-transmitted DCI to a mobile communicationterminal; wherein the method further comprises: transmitting a ControlResource Set (CORESET) to the mobile communication terminal; wherein theCORESET is used to determine possible payload size of theto-be-transmitted DCI, and determine an AL and/or the number of blinddetections corresponding to the possible payload size.
 9. The computerreadable storage medium according to claim 8, wherein the CORESET istransmitted through high-level signaling.
 10. The computer readablestorage medium according to claim 8, wherein in the correspondingrelationship, a first number is less than a second number; the firstnumber is a sum of number of search space corresponding to all the ALsof a greater one between a first payload size and a second payload size;and the second number is a sum of number of search space correspondingto all the ALs of a smaller one between the first payload size and thesecond payload size.
 11. The computer readable storage medium accordingto claim 10, wherein in the corresponding relationship, the same ALcorresponds to the same number of Candidates, a first AL is greater thana second AL; the first AL is the maximum AL among all the ALscorresponding to the greater one between the first payload size and thesecond payload size; and the second AL is the maximum AL among all theALs corresponding to the smaller one between the first payload size andthe second payload size.
 12. The computer readable storage mediumaccording to claim 11, wherein in the corresponding relationship, athird AL is greater than a fourth AL; the third AL is the minimum ALamong all the ALs corresponding to the greater one between the firstpayload size and the second payload size, and the fourth AL is theminimum AL among all the ALs corresponding to the smaller one betweenthe first payload size and the second payload size.
 13. The computerreadable storage medium to claim 10, wherein in the correspondingrelationship, corresponding to the same AL, the number of Candidatescorresponding to the greater one between the first payload size and thesecond payload size is less than, or equal to the number of Candidates,which corresponds to the smaller one between the first payload size andthe second payload size; and there is at least one AL, corresponding tothe at least one AL, the number of Candidates corresponding to thegreater one between the first payload size and the second payload sizeis less than the number of Candidates, which corresponds to the smallerone between the first payload size and the second payload size.
 14. Thecomputer readable storage medium to claim 8, wherein the correspondingrelationship is transmitted to the mobile communication terminal throughthe CORESET.
 15. A computer readable storage medium, comprising: acomputer program stored thereon, wherein the computer program isexecuted by the processor to cause the processor to perform: determiningone, or several possible payload sizes of to-be-received DCI;determining an Aggregation Level (AL) corresponding to the possiblepayload size, based on a corresponding relationship between a DCI AL anda DCI payload size; and/or, determining the number of blind detectionscorresponding to the possible payload size, based on a correspondingrelationship between the number of blind detections corresponding to theDCI AL and the DCI payload size; receiving the to-be-received DCI from abase station, based on AL and/or the number of blind detectionscorresponding to the possible payload size; wherein the processor isfurther configured to perform: receiving a Control Resource Set(CORESET) corresponding to the payload size of the to-be-received DCIfrom the base station, wherein the CORESET includes configurationinformation associated with an AL of the to-be-received DCI; whereindetermining the possible payload size of the to-be-received DCIcomprises: determining the possible payload size, based on the CORESET;wherein determining the AL and/or the number of blind detectionscorresponding to the possible payload size comprises: determining the ALand/or the number of blind detections corresponding to the possiblepayload size, by analyzing the CORESET.
 16. The computer readablestorage medium according to claim 15, wherein the CORESET is transmittedthrough high-level signaling.
 17. The computer readable storage mediumaccording to claim 15, wherein in the corresponding relationship, afirst number is less than a second number; the first number is a sum ofnumber of search space corresponding to all the ALs of a greater onebetween a first payload size and a second payload size, and the secondnumber is a sum of number of search space corresponding to all the ALsof a smaller one between the first payload size and the second payloadsize.
 18. The computer readable storage medium according to claim 17,wherein in the corresponding relationship, the same AL corresponds tothe same number of Candidates, a first AL is greater than a second AL;the first AL is the maximum AL among all the ALs corresponding to thegreater one between the first payload size and the second payload size,and the second AL is the maximum AL among all the ALs corresponding tothe smaller one between the first payload size and the second payloadsize.
 19. The computer readable storage medium according to claim 18,wherein in the corresponding relationship, a third AL is greater than afourth AL; the third AL is the minimum AL among all the ALscorresponding to the greater one between the first payload size and thesecond payload size, and the fourth AL is the minimum AL among all theALs corresponding to the smaller one between the first payload size andthe second payload size.
 20. The computer readable storage mediumaccording to claim 17, wherein in the corresponding relationship,corresponding to the same AL, the number of Candidates corresponding tothe greater one between the first payload size and the second payloadsize is less than, or equal to the number of Candidates, whichcorresponds to the smaller one between the first payload size and thesecond payload size; and there is at least one AL, corresponding to theat least one AL, the number of Candidates corresponding to the greaterone between the first payload size and the second payload size is lessthan the number of Candidates, which corresponds to the smaller onebetween the first payload size and the second payload size.